Pseudocode for Reverse of a Number

Reversing a number is a frequently encountered problem in computer science and programming. It involves taking an integer and reversing its digits. For example, reversing the number 12345 would result in 54321. This guide will walk you through a simple pseudocode to reverse a given number efficiently.

Pseudocode:

1. Start
2. Initialize a variable reversed_number to 0. This will hold the reversed number.
3. Input the number to be reversed as n.
4. Whilen is greater than 0, repeat the following steps:
   • Extract the last digit of n by calculating digit = n % 10.
   • Update the reversed_number by multiplying it by 10 and adding the digit:
     reversed_number = reversed_number * 10 + digit.
   • Remove the last digit from n by performing integer division:
     n = n // 10.
5. Output the reversed_number.
6. End

How the Pseudocode Works:

This pseudocode illustrates the steps involved in reversing the digits of a number. The process iteratively extracts the last digit, appends it to the reversed number, and removes the last digit from the original number until no digits remain. This is a simple yet effective method for reversing a number.